WHERE STANDS NONDESTRUCTIVE TESTING OF CONCRETE AND WHITHER?

Nondestructive methods of testing concrete are reviewed and their relative merits discussed. Each method has its own limitations and skill in required in interpreting the results. An indication is given of areas where research into nondestructive techniques would be profitable. Several methods of ultrasonic testing are described, and the most suitable technique recommended for a particular set of conditions. Radioactivity methods using x-rays or gamma radiation are given; these cover both radiography and radiometry. The use of magnetic devices to measure the depth of steel reinforcement, and neatron meters to measure moisture content is described. Methods where the dielectrical properties of concrete have been used to determine moisture content are given. Chemical analysis of the wet concrete is mentioned as a means of predicting the strength of the hardened concrete. The authors conclude that although nondestructive testing has many advantages its progress is hindered by the lack of background training of testing engineers. /TRRL/

• Corporate Authors:

  GORDON AND BREACH SCIENCE PUB.

  AMSTERDAM:
  ,    
• Authors:
  • Li, S T
  • Ramakrishnan, V
  • Russell, J E
• Publication Date: 1970

Language

• English

Media Info

• Features: References;
• Pagination: p. 281-300
• Serial:
  • International Journal of Nondestructive Testing
  • Volume: 2
  • Publisher: GORDON AND BREACH SCIENCE PUB.

Subject/Index Terms

• TRT Terms: Backscattering; Chemical analysis; Concrete; Concrete tests; Depth; Dielectric materials; Electricity; Gamma rays; Magnetic properties; Material reinforcement; Moisture content; Nondestructive tests; Nuclear radiation; State of the art reports; Steel; Strength of materials; Test procedures; Tests; Ultrasonic tests; Ultrasonics; X rays
• ITRD Terms: 6160: Back scattering apparatus; 3472: Beam; 7163: Chemical analysis; 4755: Concrete; 6499: Depth; 6954: Electricity; 6706: Gamma ray; 6936: Magnetism; 5920: Moisture content; 6216: Non destructive testing; 6726: Radiation (nucl); 8588: State of the art report; 4542: Steel; 5544: Strength (mater); 6255: Test; 6739: Ultrasonic; 6728: X ray
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00127807
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Dec 3 1975 12:00AM